1042645951 has 2 divisors, whose sum is σ = 1042645952. Its totient is φ = 1042645950.

The previous prime is 1042645873. The next prime is 1042646021. The reversal of 1042645951 is 1595462401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1042645951 - 2¹⁵ = 1042613183 is a prime.

It is a super-2 number, since 2×1042645951² = 2174221158273388802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1042645951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1042643951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521322975 + 521322976.

It is an arithmetic number, because the mean of its divisors is an integer number (521322976).

Almost surely, 2^1042645951 is an apocalyptic number.

1042645951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1042645951 is an equidigital number, since it uses as much as digits as its factorization.

1042645951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1042645951 is about 32290.0286621118. The cubic root of 1042645951 is about 1014.0178973742.

It can be divided in two parts, 104264 and 5951, that added together give a triangular number (110215 = T₄₆₉).

The spelling of 1042645951 in words is "one billion, forty-two million, six hundred forty-five thousand, nine hundred fifty-one".